Docker and Kubernetes Fundamentals

Course Overview

Chapter 1. Docker and Linux Container Technology: Introduction and Use-Cases

• Modern Infrastructure Terminology
• Virtualization
• Hypervisors
• Hypervisor Types
• Type 1 Hypervisors
• Type 2 Hypervisors
• Type 1 vs Type 2 Processing
• Paravirtualization
• Virtualization Qualities (1/2)
• Virtualization Qualities (2/2)
• Disadvantages of Virtualization
• Containerization
• Virtualization vs Containerization
• Where to Use Virtualization and Containerization
• Containerization: High-Level
• Popular Containerization Systems
• What are Linux Containers
• Docker
• OpenVZ
• Solaris Zones (Containers)
• Container Orchestration Tools
• Docker Swarm
• Kubernetes
• Mesos and Marathon
• Mesos and Marathon (contd.)
• Docker Use-Cases
• Microservices
• Microservices and Containers / Clusters

Chapter 2. Docker in Action

• Docker Basics
• Where Can I Run Docker?
• Installing Docker Container Engine
• Docker Toolbox
• What is Docker?
• Docker Architecture
• Docker Architecture Diagram
• Docker Images
• Docker Containers
• Docker Integration
• Docker Services
• Docker Application Container Public Repository
• Docker Run Command
• Starting, Inspecting, and Stopping Docker Containers
• Docker Volume
• Dockerfile
• Docker Compose
• Using Docker Compose
• Dissecting docker-compose.yml
• Specifying services
• Dependencies between containers
• Injecting Environment Variables

Chapter 3. Managing Docker State

• State and Data in Docker
• Volumes
• More About Volumes
• Uses for Volumes
• Working With Volumes
• Create Volume
• Use Volumes with Containers
• Bind Mounts
• Using Bind Mounts
• tmpfs Mounts
• Storing Data in the Container
• Storage Drivers
• Remote Data Storage
• Networking
• The Default Bridge Network
• User-Defined Bridge Networks
• Docker Network Commands
• Creating a User-Defined Bridge Network

Chapter 4. Open Container Initiative and Container Runtime Interface

• Open Container Initiative (OCI)
• Docker
• Docker Engine Architecture
• runC
• containerd
• containerd Benefits
• CRI-O
• CRI-O Components
• Kubernetes and CRI-O
• Using Container Runtimes with Minikube
• Docker Runtime and Kubernetes
• Putting Things Together

Chapter 5. Kubernetes Architecture

• Kubernetes Basics
• What is Kubernetes?
• Container Orchestration
• Architecture Diagram
• Components
• Kubernetes Cluster
• Master Node
• Kube-Control-Manager
• Nodes
• Pod
• Using Pods to Group Containers
• Label
• Label Syntax
• Label Selector
• Annotation
• Persistent Storage
• Resource Quota
• Interacting with Kubernetes

Chapter 6. Working with Kubernetes

• Installation
• Startup
• Kubernetes Tools
• kubectl Command Line Interface
• API Proxy
• Dashboard
• Kubernetes Component Hierarchy
• Deployments
• Deployment Commands
• Updating Deployments
• Network Considerations
• Services
• Namespaces
• Labels
• Annotations
• Other Useful Commands

Chapter 7. Kubernetes Workload

• Kubernetes Workload
• Managing Workloads
• Imperative commands
• Imperative Object Configuration
• Declarative Object Configuration
• Configuration File Schema
• Understanding API Version
• Obtaining API Versions
• Stateless Applications
• Sample Deployment Manifest File
• Working with Deployments
• Stateful Applications
• Sample Stateful Manifest File
• Working with StatefulSet
• Jobs
• Sample Job Manifest File
• Working with Batch Job
• DaemonSets
• Sample Daemon Manifest File
• Rolling Updates

Chapter 8. Scheduling and Node Management

• Kubernetes Scheduler
• Skip Kubernetes Scheduler
• Scheduling Process
• Scheduling Process - Predicates
• Scheduling Process - Priorities
• Scheduling Algorithm
• Kubernetes Scheduling Algorithm
• Scheduling Conflicts
• Controlling Scheduling
• Label Selectors
• Node Affinity and Anti-affinity
• Node Affinity Example
• Node Antiaffinity Example
• Taints and Tolerations
• Taints and Tolerations - Example

Chapter 9. Managing Networking

• Kubernetes Networking Components
• The Kubernetes Network Model
• Networking Scenarios
• Container-Container Communication
• Pod-Pod Communication
• 1.3 Pod-Service Communication
• External-Service Communication
• Accessing Applications
• Useful Commands
• Container Network Interface (CNI)
• What is CNI’s Role?
• CNI Configuration Format
• Sample CNI Configuration
• Running the CNI Plugins

Chapter 10. Managing Persistent Storage

• Storage Methods
• Container OS file system storage
• Docker Volumes
• Kubernetes Volumes
• K8S Volume Types
• Cloud Resource Types
• configMaps
• Creating configMaps from Literals
• Creating configMaps from files
• Using configMaps
• emptyDir
• Using an emptyDir Volume
• Other Volume Types
• Persistent Volumes
• Creating a Volume
• Persistent Volume Claim
• Persistent Volume
• Pod that uses Persistent Volume
• Secrets
• Creating Secrets from Files
• Creating Secrets from Literals
• Using Secrets
• Security Context
• Security Context Usage

Chapter 11. Working with Helm

• What is Helm?
• Installing Helm
• Helm and KUBECONFIG
• Helm Features
• Helm Terminology
• Searching for Charts with helm CLI
• Adding Repositories
• Helm Hub - Search
• Helm Hub - Chart Page
• Installing a Chart
• Upgrading a Release
• Rolling Back a Release
• Creating Custom Charts
• Common Chart Files
• Helm Templates
• Installing A Custom Chart
• Packaging Custom Charts

Chapter 12. Logging, Monitoring, and Troubleshooting

• Differences Between Logging and Monitoring
• Logging in Kubernetes
• Basic Logging
• Logging Agents
• Fluentd and Elastic Stack
• Monitoring with Prometheus
• Kubernetes and Prometheus - Metrics
• Alerting
• Debugging Pods
• Debugging Nodes
• Debugging Replication Controllers and Services
• Upgrading Kubernetes
• Upgrade Process
• Determine Which Version to Upgrade To
• Upgrade kubeadm
• Upgrade Control Plane Node
• Upgrade kubelet and kubectl
• Upgrade Worker Nodes
• Recovering From a Failure State

Chapter 13. Continuous Integration Fundamentals

• Jenkins Continuous Integration
• Jenkins Features
• Running Jenkins
• Downloading and Installing Jenkins
• Running Jenkins as a Stand-Alone Application
• Running Jenkins on an Application Server
• Installing Jenkins as a Windows Service
• Different types of Jenkins job
• Configuring Source Code Management(SCM)
• Working with Subversion
• Working with Git
• Build Triggers
• Schedule Build Jobs
• Polling the SCM
• Maven Build Steps
• Configuring Jenkins to Access Kubernetes
• Jenkins Pipeline
• Jenkins Pipeline Output
• Installing Jenkins Plugins

Lab Exercises

• Lab 1. Creating a Docker Account and Obtain an Access Token
• Lab 2. Managing Containers
• Lab 3. Building Images
• Lab 4. Dockerfiles
• Lab 5. Getting Started with Docker Compose
• Lab 6. Docker Volumes
• Lab 7. Custom Network Management
• Lab 8. Configuring Minikube/Kubernetes to Use a Custom Docker Account
• Lab 9. Accessing the Kubernetes API
• Lab 10. Working with Kubernetes Workloads
• Lab 11. Scheduling and Node Management
• Lab 12. Accessing Applications
• Lab 13. Using Persistent Storage
• Lab 14. Getting Started with Helm
• Lab 15. Build CI Pipeline with Jenkins

Prerequisites

Proficiency with the Linux Command Line Interface (CLI)

Broad understanding of Linux system administration: Linux file system, networking, and bash scripting.

Computer programming concepts and methodologies. Full code examples for the course are provided in the Python and Java programming languages.